1. Fast walking speed: Walking speed is linked to good cardiovascular health.  A walking speed below 0.6m/s indicates slow walking, which may reduce longevity.

2. Strong grip strength: Grip strength peaks in individuals aged 20-30 and gradually declines with age. Those with a faster decline in grip strength tend to age faster. 

3. Maintaining a slightly overweight status: Older adults with a slightly overweight status have better cold tolerance and disease resistance, and recover better after illness. 

4. Slightly lower heart rate:  Regular exercise and daily activities can lower heart rate by 4-5 beats per minute after three months for older adults.

5. Positive mindset: Prolonged negative emotions can weaken the immune system and slow down metabolism. Optimistic individuals live 10% longer than pessimistic individuals.